Cascadia Catalog 1793-1930

	Cascadia Historic Earthquake Catalog, 1793-1929 Covering Washington, Oregon and Southern British Columbia Provided by: The Pacific Northwest Seismic Network About the Cascadia Historic Earthquake Catalog One-line catalog format 1793-1849 .... 1850s .... 1860s .... 1870s .... 1880s .... 1890s .... 1900s .... 1910s .... 1920s .... 1930s (not complete) .... Other Cascadia Catalogs

1910s

Event #431 - Summary, and parameter estimates with source IDs Full references for Event # 431

This earthquake was first cataloged by Berg and Baker, citing the Oregonian, which says it was felt in tall buildings.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1910	2	6	4	45	P		45.53	122.62				Portland	OR
N-Ore - 1977							WWC - 1772		-	-		BB - 1340				-

Event #432 - Summary, and parameter estimates with source IDs Full references for Event # 432
Berg and Baker were the first to catalog this earthquake, felt in Portland, citing the Oregonian. The Intensity of IV seems high, given the descriptions: "... The tremor was felt at several points in the city but was not of any great violence nor was the shock of any great length. The shake occurred a few minutes after 4 o'clock and lasted about 20 seconds... in the Swetland building [people] noticed the windows begin to rattle and felt a distinct jar.... Mrs. J.T. Morgan... and the members of her family felt a decided upheaval and then a distinct quake. They saw the windows move and the dishes on the table shake. Several others ... telephoned to The Oregonian that they had felt the earthquake.People in many of the large buildings felt the shock but attributed the slight trembler to the vibration caused by heavy machinery. " No other newspapers have been researched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1910	2	15	4	0	P	P	45.55	122.60				Portland	OR	IV	MM
BB - 1341							WWC - 1773		-	-		BB - 1341				-

Event #433 - Summary, and parameter estimates with source IDs Full references for Event # 433
Known only from the Vancouver Progress article transcribed in the WPPSS documents: "Nelson April 4 - W.R. Jarvis, warden of the Provincial Jail believes that an earthquake tremor was felt in Nelson last week. There were two occasions on which the cell doors and all the movable iron work rattled without any apparent cause. ...The guards and prisoners both noticed and commented on the incidents at the time."
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1910	3											Nelson	B.C.
N-WPP - 2503							-		-	-		N-WPP - 2503				-

Event #434 - Summary, and parameter estimates with source IDs Full references for Event # 434
Known only from the Victoria Daily Colonist article transcribed in the WPPSS documents: "...The second was noticed about 2:30 P.M. and was especially felt at Colwood. "
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1910	7	19	2	30	P							Victoria	B.C.
N-WPP - 2504							-		-	-		N-WPP - 2504				-

Event #435 - Summary, and parameter estimates with source IDs Full references for Event # 435
Listed in the catalogs of Berg and Baker, and Woodward-Clyde.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1910	8	5	1	31			42.00	127.00		6.80	N'	Offshore	OR
BB - 1342							BB - 1342		-	WWC - 1774		BB - 1342				-

Event #436 - Summary, and parameter estimates with source IDs Full references for Event # 436
Previously uncataloged. Known from Reid's notes, and weakly supported by an article in the Port Angeles Tribune Times about the earthquake of 2/13/1911: "very much resembling the visitation of two or three months ago" Additional newspapers should be researched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1910	11	30	11	59	P	P						Victoria	B.C.	IV
REID1 - 660							-		-	-		REID1 - 660				-

Event #437 - Summary, and parameter estimates with source IDs Full references for Event # 437
Previously uncataloged. The sources of information are the Port Angeles "Tribune Times" and the Victoria Daily Colonist. It was slightly felt in Victoria, and more strongly felt in Port Angeles. From the Port Angeles "Tribune Times": "At about 6:10 o' clock Monday morning last the region about Port Angeles was treated to another slight shock of earthquake, very much resembling the visitation of two or three months ago. The tremor while slight, was distinct and unmistakable and was very generally felt by the residents of this city. Those who were up, and about their daily duties at that time, nearly all felt the disturbance, and many who were still slumbering were awakened by the motion. Others slept through it blissfully. The motion was sufficiently heavy to shake buildings decidedly and rattle loose windows, but not strong enough to do any damage of any kind. Many people who observed the phenomenon declare that it was accompanied by rumblings, while others say they did not hear any such thing. The disturbance was evidently local, as no accounts of it are given in the dispatches from other localities."
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1911	2	13	6	10	A	L						Port Angeles	WA
N-WA - 1619							-		-	-		N-WA - 1619				-

Event #438 - Summary, and parameter estimates with source IDs Full references for Event # 438
The apparent source of information for this is Reid's Scrapbook, cited by Townley and Allen. No newspapers have been checked.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1911	7	4	12			P	46.99	120.54				Ellensburg	WA	IV	RF
TAWA - 1127							WWC - 1775		-	-		TAWA - 1127				-

Event #439 - Summary, and parameter estimates with source IDs Full references for Event # 439
Listed only by Bradford and Milne. No newspapers have yet been researched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1911	7	4	10	23	P	L						Victoria	B.C.
MILNE - 1435							-		-	-		MILNE - 1435				-

Event #440 - Summary, and parameter estimates with source IDs Full references for Event # 440
Dr. Garry Roger's dissertation gives the magnitude and felt area given above. Newspaper and catalog entries are in reasonably good agreement for this earthquake. The BSSA (1911) says: "....No damage was reported at Victoria, B.C., but at Bellingham, Wash., it is said that a few frail chimneys were thrown down. From the Oregonian: ".... Bellingham, Wash., Sept. 28. -- A distinct earthquake shock was felt here at 6:39 tonight. The shock was of short duration and did no damage in the business district, although those who were in the upper stories of buildings and several who occupy structures that are built on piling along the waterfront say that the shock caused the building to rock so that they ran to the open fearing a catastrophe, Only one shock was perceptible... No record was made by the seismograph at the University of Washington." Apparently the movement was from west to east. ..." Other newspapers have not been researched, but should be.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1911	9	28	6	39	P	P	48.80	122.70		4.10	MI	Northwestern	WA	VI	MM	8000.00		km2
TAWA - 1128							RAS - 114		-	GCR - 2330		USEQS - 943				GCR - 2330

Event #441 - Summary, and parameter estimates with source IDs Full references for Event # 441
Offshore; felt at Triangle Island off the northwest tip of Vancouver Island. Reid cites BSSA, V. 2, p. 94.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1912	3	11	2	17		L	51.00	131.00		6.50	G	Triangle Island	B.C.
MILNE - 1437							MILNE - 1437		-	MILNE - 1437		MILNE - 1437				-

Event #442 - Summary, and parameter estimates with source IDs Full references for Event # 442
Seattle and Olympia; two slight shocks reported. Reid's notes are the underlying source here, and list the Seattle PI of 6/8. Newspapers have not yet been checked.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1912	6	6			P	P	47.32	122.61				S. Puget Sound	WA
TAWA - 1129							WWC - 1777		-	-		WPPSS - 2450				-

Event #443 - Summary, and parameter estimates with source IDs Full references for Event # 443
Known only from Milne: "1912 AUGUST 18. Newspaper reports indicate an earthquake was felt at Salmon Arm near Clowhan Lake, also at Sechelt, Deserted Bay, and up to the head of Jervis Inlet. D"
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1912	8	18										Salmon Arm	B.C.
MILNE - 1438							-		-	-		MILNE - 1438				-

Event #444 - Summary, and parameter estimates with source IDs Full references for Event # 444
Known only from the Medford, Oregon 'Mail Tribune' of Jan 31, 1922 which mentions an Oct. 1912 earthquake " felt in this section."
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1912	10											Medford	OR
N-OR - 1614							-		-	-		N-OR - 1614				-

Event #445 - Summary, and parameter estimates with source IDs Full references for Event # 445
Aftershock of previous event. Known only from the Milne catalog, which states that it was recorded on the Victoria seismograph, but not felt.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1912	11	21	5	15	P	P						Fraser River	B.C.	0
MILNE - 1439							-		-	-		MILNE - 1439				-

Event #446 - Summary, and parameter estimates with source IDs Full references for Event # 446
Described by Milne: "1912 NOVEMBER 21. Newspapers reported an earthquake in the Lynn Valley and Blenkinsop Bay in south central British Columbia. D The Vancouver Times reported an earthquake was felt from the Fraser River to the end of Burrard Inlet on the same day at 4:47 p.m. The Victoria seismograph recorded an earthquake occurring at this time at a distance of 100 to 200 miles. Another tremor was recorded at 5:15 p.m. but it was not felt."
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1912	11	21	4	47	P	L	50.00	124.00				Fraser River	B.C.			200.00		mi2
MILNE - 1439							REID1 - 661		-	-		MILNE - 1439				MILNE - 1439

Event #447 - Summary, and parameter estimates with source IDs Full references for Event # 447
Three slight shocks in Seattle only. The original sources are the BSSA, and the Seattle PI of 11/25 (not yet checked). No newspapers have been researched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1912	11	24	7	20	P	P	47.59	122.33				Seattle	WA
TAWA - 1130							WWC - 1779		-	-		TAWA - 1130				-

Event #448 - Summary, and parameter estimates with source IDs Full references for Event # 448
See previous comment.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1912	11	24	8	30	P	P	47.59	122.33				Seattle	WA
TAWA - 1130							WWC - 1780		-	-		TAWA - 1130				-

Event #449 - Summary, and parameter estimates with source IDs Full references for Event # 449
See previous comment.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1912	11	24	9	5	P	P	47.59	122.33				Seattle	WA
TAWA - 1130							WWC - 1781		-	-		TAWA - 1130				-

Event #450 - Summary, and parameter estimates with source IDs Full references for Event # 450
Little information on this shock is available. Most catalogs cite Townley and Allen, who cite Reid's scrapbook. Reid's notes read: "Roseburg, Douglas Co. 43 degrees 15' N; 123 degrees 20'W PST 6:30 pm 15 March, 1913 GMT 2h 30m 16 March, 1913 III-IV, duration 1 second -SB III, pg 174 Slight shock, not reported elsewhere." No newspapers have been researched for this earthquake.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1913	3	15	7		P	P	43.25	123.50				Roseburg	OR	IV	MM
TA-OR - 525							REID1 - 618		-	-		BB - 1344				-

Event #451 - Summary, and parameter estimates with source IDs Full references for Event # 451
The BSSA is cited as a source for this earthquake: "A shock at Medford, Oregon. - A slight earthquake is reported from Medford, Oregon. It occurred at 12:40 p.m. March 15, 1913: no damage was done." The Medford 'Mail Tribune' is more verbose but in good general agreement with the BSSA,although a "Y" shaped pavement crack about ten feet long was said to have been caused by the earthquake. It describes the earthquake as lasting five seconds.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1913	3	15	12	40	P	P	42.33	122.83				Medford	OR	III	MM
TA-OR - 524							REID1 - 617		-	-		BB - 1343				-

Event #452 - Summary, and parameter estimates with source IDs Full references for Event # 452
Newspaper accounts agree with the BSSA description: "A slight earthquake on Mt. Rainier, Washington. - About 8:15 o'clock on the morning of July 29, 1913, two earthquake shocks shook Mount Rainier and were felt over an area of more than a hundred square miles. The shocks appeared to be the strongest at Lewis in Lewis County, and were noted at Elbe and Etonville, in Pierce County. The disturbance is said to have lasted about half a minute. Ethan Allen, superintendent of the National Park, Washington, says the shocks came close together and were so violent that there could be no doubt about their being of a seismic nature. From reports received the shock had an intensity of between V and VI of the Rossi-Forel scale." Some catalogers report that this earthquake was recorded on the seismometer at Seattle. but several newspapers say that it was not.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1913	7	29	16	15		G						Mt. Rainier	WA	V	MM	1500.00		mi2
RAS - 117							-		-	-		RAS - 117				RAS - 117

Event #453 - Summary, and parameter estimates with source IDs Full references for Event # 453
Known from Weather Bureau Report. "Earthquake - Lakeside at 4:45 am"
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1913	10	14	4	45	A							Lakeside	WA
LANGE - 7110							-		-	-		LANGE - 7110				-

Event #454 - Summary, and parameter estimates with source IDs Full references for Event # 454
Known from the BSSA: "Eastern Oregon. - A rather severe earthquake is reported to have occurred at 3 p.m. October 14, 1913, in the Seven Devils district along the Idaho-Oregon line. Reports state that the shock lasted one minute, shook houses, and broke windows and dishes." Townley and Allen cite the Oregonian of 10/15, and newspapers should be checked.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1913	10	14	3	0	P	P	45.70	117.10				Seven Devils Region	OR	V	MM
TA-OR - 526							USEQS - 945		-	-		USEQS - 945				-

Event #455 - Summary, and parameter estimates with source IDs Full references for Event # 455
Known only from Milne: "The south end of Graham Island in the Queen Charlotte Islands was shaken. D"
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1913	10	18										Graham Islands	B.C.
MILNE - 1440							-		-	-		MILNE - 1440				-

Event #456 - Summary, and parameter estimates with source IDs Full references for Event # 456
This may be a foreshock for the following event. "Earthquake History of the United States" and some other sources state that this event was felt in Seattle; but Reid's notes and the Seattle PI suggest that only the later event was felt in Seattle.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1913	12	25	2	45	A	P	47.75	122.50		4.70	MI	Edmonds	WA
TAWA - 1132							REID1 - 756		-	GCR - 2330		TAWA - 1132				-

Event #457 - Summary, and parameter estimates with source IDs Full references for Event # 457
This event was preceded by a possible foreshock several hours earlier. There are some discrepencies about the duration of this event. A brief article in the Seattle PI says that the shaking lasted more than a minute, while Reid's notes say: "The second shock was the stumper and appears to have been double, lasting almost 40 seconds with an interval of 15 seconds between the two parts." The BSSA says that the shock was of 5 seconds duration. Townley and Allen say that this event as felt at Edmonds, Seattle, and Tacoma, with the greatest intensity at Tacoma. They cite "BSSA, 4, 41; S. F. Chronicle, December 26, 1913; Reid's Scrapbook, 3, 194." Reid's notes say that it was recorded in Seattle, but not in Victoria. The felt area and magnitude source is Dr. Garry Rogers' dissertation. Additional newspaper research might help to clarify what was experienced.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1913	12	25	6	40	A	P	47.75	122.50		4.70	MI	Edmonds	WA			8000.00		mi2
TAWA - 1132							BRAD - 298		-	GCR - 2330		TAWA - 1132				BRAD - 298

Event #458 - Summary, and parameter estimates with source IDs Full references for Event # 458
Known only from Weather Bureau Report. "Earthquakes - Baker very slight"
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1914	1	5										Baker	WA
LANGE - 7111							-		-	-		LANGE - 7111				-

Event #459 - Summary, and parameter estimates with source IDs Full references for Event # 459
Known only from Weather Bureau Report. "Earthquakes - Lakeside"
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1914	1	7										Lakeside	WA
LANGE - 7111							-		-	-		LANGE - 7111				-

Event #460 - Summary, and parameter estimates with source IDs Full references for Event # 460
Known only from Weather Bureau Report. Yale - distinct.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1914	1	13										Yale	WA
LANGE - 7111							-		-	-		LANGE - 7111				-

Event #461 - Summary, and parameter estimates with source IDs Full references for Event # 461
Known only from Weather Bureau Report. "Earthquake - Lakeside "
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1914	1	31										Lakeside	WA
LANGE - 7111							-		-	-		LANGE - 7111				-

Event #462 - Summary, and parameter estimates with source IDs Full references for Event # 462
No details. Townley and Allen are cited by other catalogs as the source for this event. They cite the 'Weather Bureau Climatological Data' (not in the data base). Newspapers have not been checked.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1914	2	1					47.83	120.02				Lakeside	WA
TAWA - 1133							WWC - 1785		-	-		RAS - 119				-

Event #463 - Summary, and parameter estimates with source IDs Full references for Event # 463
Catalog entries cite the BSSA and the Oregonian. The BSSA comment: "Oregon, March 22, 1914. - A slight earthquake was felt throughout the city of Portland, Oregon, the morning of March 22d. Windows and dishes rattled and houses swayed, but no damage was done.", is in good agreement with the fairly lengthy Oregonian account.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1914	3	22	6	30	A	P	45.53	122.62				Portland	OR	IV	RF
TA-OR - 527							WWC - 1786		-	-		TA-OR - 527				-

Event #464 - Summary, and parameter estimates with source IDs Full references for Event # 464
This mysterious event is known only from Bradford, who gives no details.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1914	3	29				U							WA
BRAD - 300							-		-	-		BRAD - 300				-

Event #465 - Summary, and parameter estimates with source IDs Full references for Event # 465
This event appear to be an instrumental location. It is known only from Milne, who states that it was not felt.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1914	7	21	2	31	P	L	49.00	130.00		6.50	G
MILNE - 1441							MILNE - 1441		-	MILNE - 1441		-				-

Event #466 - Summary, and parameter estimates with source IDs Full references for Event # 466
No details given. Townley and Allen were the first to list this event, they cite 'Weather Bureau Climatologic Data" (not in the database).
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1914	8	8					47.83	120.02				Lakeside	WA
TAWA - 1134							WWC - 1787		-	-		TAWA - 1134				-

Event #467 - Summary, and parameter estimates with source IDs Full references for Event # 467
Known from Berg and Baker, who cite Gutenberg and Richter (1949); this must be an instrumental location.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1914	8	22	5	28			44.00	129.00				Offshore	OR
BB - 1348							BB - 1348		-	-		BB - 1348				-

Event #468 - Summary, and parameter estimates with source IDs Full references for Event # 468
The felt area of this event is likely to be quite a bit larger than the 1000 square miles given in 'Earthquake History of the United States' The BSSA says: "Olympia, Washington. - The following is quoted from the Olympia Recorder of September 5, 1914: 'Olympia and this part of the state was soundly jolted and jarred at 1:35 this morning by an earthquake shock. First sensation was a tremor or vibration, then came a sharp and severe jolt and rocking motion that jarred the houses, making loose articles rattle, many report. Within two mintes after the shock the telephone central here was getting reports. The quake was felt in Tacoma, Puyallup, Sumner, Auburn, and other points. No report was received here today as to the seismograph records at the university in Seattle.'" The Oregonian reports that the earthquake was felt in Portland at 2 AM, and that two shocks, at 1 and 2 AM were generally felt in Castle Rock, Washington.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1914	9	5	9	35		G	47.00	123.00				Puget Sound	WA	V	RF	1000.00		mi2
RAS - 122							USEQS - 947		-	-		TAWA - 1135				USEQS - 947

Event #469 - Summary, and parameter estimates with source IDs Full references for Event # 469
Known only from Weather Bureau Report. "Earthquake - Lakeside - There was a heavy earthquake shock on the 23d at 2:33 am"
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1914	9	23	2	33								Lakeside	WA
LANGE - 7111							-		-	-		LANGE - 7111				-

Event #470 - Summary, and parameter estimates with source IDs Full references for Event # 470
The MWR weather observer in LaGrande Oregon described this as being RF Intensity V in Summerville, Oregon. Townley and Allen describe the shock as "medium" and cite the S.F. Chronicle of 1/19/1915. The BSSA, (V. 5, p. 54) describes it as light: "January 18, 1915. - A light earthquake was felt at Summervillle, Oregon. The shock is said to have been felt over an area of forty square miles." Berg and Baker cite the Oregonian of January 19, 1915. Researching newspaper articles might be helpful, as none are yet included in the data base.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	1	18				G	45.45	118.08				Summerville	OR	V	RF	40.00		mi2
RAS - 123							MWR - 2210		-	-		MWR - 2210				BSSA - 2173

Event #471 - Summary, and parameter estimates with source IDs Full references for Event # 471
The underlying source is a single report from the Forest Service at Longmire. No newspapers have been researched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	1	25	4	55	P	P	46.75	121.81				Longmire	WA	IV	RF
TAWA - 1136							WWC - 1792		-	-		TAWA - 1136				-

Event #472 - Summary, and parameter estimates with source IDs Full references for Event # 472
The underlying source for this event is the weather observer in Queets River, Chehalis County.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	2	10	7	7	P	U	47.50	124.00				Queets River	WA	II	RF
BRAD - 302							WWC - 1793		-	-		BRAD - 302				-

Event #473 - Summary, and parameter estimates with source IDs Full references for Event # 473
The underlying source is a single report from the weather observer at Lakeside. The date of 3/1, given by Rasmussen and Woodward-Clyde is incorrect.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	2	28	18	0		G	47.83	120.02				Lakeside	WA	III	RF
MWR - 2213							MWR - 2213		-	-		MWR - 2213				-

Event #474 - Summary, and parameter estimates with source IDs Full references for Event # 474
No details. The underlying source for all catalog entries is a single report from the weather observer at Lakeside. No newspapers have been checked.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	3	1	3	0		G	47.83	120.00				Lakeside	WA	III	RF
MWR - 2214							MWR - 2214		-	-		MWR - 2214				-

Event #475 - Summary, and parameter estimates with source IDs Full references for Event # 475
This is the first of two shocks reported felt at Lakeside, at the south end of Lake Chelan. The underlying source is the report by weather oberver of RF Intensity of I for this event, and a duration of 1 second. Many catalogs have overstated the intensity of this event.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	3	6	5	10		G	47.83	120.00				Lakeside	WA	I	RF
MWR - 2215							MWR - 2215		-	-		MWR - 2215				-

Event #476 - Summary, and parameter estimates with source IDs Full references for Event # 476
The underlying source is the MWR which reports this event as RF IV, lasting 5 seconds at Lakeside. Some investigators have apparently confused the date; and dates of March 4 and March 5 have been given for this event. No newspapers have been researched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	3	6	5	30		G	47.83	120.00				Lakeside	WA	IV	RF
MWR - 2216							MWR - 2216		-	-		MWR - 2216				-

Event #477 - Summary, and parameter estimates with source IDs Full references for Event # 477
Weather observer H.E. Thompson reported this as a RF Intensity V at Tacoma, and intensity III at Sumner, and remarked that it was felt at several places along the head of Puget Sound. The BSSA mentions that it was felt at Dupont and in the Puyallup Valley, and was recorded on the seismograph at the University of Washington. Bradford, and Reid's notes, say that it was felt at Seattle. No newspapers have been researched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	4	22	18	35		G	47.20	122.40				Tacoma	WA	V	RF
MWR - 2217							WWC - 1798		-	-		MWR - 2218				-

Event #478 - Summary, and parameter estimates with source IDs Full references for Event # 478
Townley and Allen repeat what Smith gives: "Portland. Reported as though localized in eastern part of Portland; rattled dishes, rocked chairs, disarranged books in cases, caused fright. Three shocks" and cite BSSA, 9, 68. 'Earthquake History of the United States' cites BSSA Vol. 53. These have not yet been checked. Newspapers also should be researched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	5	19	7		P		45.50	122.70				Portland	OR	V	MM
TA-OR - 531							USEQS - 948		-	-		USEQS - 948				-

Event #479 - Summary, and parameter estimates with source IDs Full references for Event # 479
The underlying source for all catalog entries is a single report from the Lakeside weather observer.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	7	18	20	54		G	47.83	120.00				Lakeside	WA	IV	RF
MWR - 2219							MWR - 2219		-	-		MWR - 2219				-

Event #480 - Summary, and parameter estimates with source IDs Full references for Event # 480
This earthquake is well supported by both catalog and newspaper evidence, although a few catalogs have cited the time of the aftershock as the mainshock time. The highest intensity reliably reported in Washington was RF V, at Marblemount. The BSSA reports: "...An earthquake was felt over nearly all of British Columbia lasting in some places twenty seconds or more. It was reported from Vancouver, Yale, Harrison, Penticton, and Summerland. It was also observed at Seattle, Wash. and at Bellingham where doors and windows rattled and sleepers awakened. No damage was done." The magnitude and felt area cited here are from the dissertation of Garry Rogers.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	8	18	6	5	A	L	48.50	121.40		5.60	MI	Marblemount	WA	V	RF	77000.00		km2
MILNE - 1442							RAS - 131		-	GCR - 2330		MWR - 2223				GCR - 2330

Event #481 - Summary, and parameter estimates with source IDs Full references for Event # 481
This is an aftershock of the preceding event. The underlying information here is a single observation from the weather observer in Marblemount. Bradford, 'Earthquake History of the US', and the WPPSS catalog mistakenly give this time for the main shock.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	8	18	10		A		48.50	121.40				Marblemount	WA	III	RF
TAWA - 1142							USEQS - 949		-	-		MWR - 2225				-

Event #482 - Summary, and parameter estimates with source IDs Full references for Event # 482
Known only from the Chilliwack Progress article transcribed in the WPPSS documents: "HOPE NEWS - Earth tremors, two distinct shocks, were felt in Hope on Wednesday morning."
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	8	25			A							Hope	B.C.
N-WPP - 2486							-		-	-		N-WPP - 2486				-

Event #483 - Summary, and parameter estimates with source IDs Full references for Event # 483
This large shock was in Pleasant Valley, Nevada, but was well felt in southern Oregon; RF Intensity VI, and cracking walls in Baker (according to MWR). Also felt in Stockton, Fresno, and Sacramento, California; Reno, Nevada, and at Salt Lake City, Utah according to Smith.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	10	2	10	55	P	P	44.77	117.83				Baker	OR	VI	RF
TA-OR - 532							MWR - 2226		-	-		MWR - 2226				-

Event #484 - Summary, and parameter estimates with source IDs Full references for Event # 484
All catalog accounts arise from the observation of the weather observer in Fruita. No newspapers have been checked.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	10	19	11	30	P	P	45.33	116.76				Fruita
TA-OR - 533							REID1 - 623		-	-		TA-OR - 533				-

Event #485 - Summary, and parameter estimates with source IDs Full references for Event # 485
All catalog entries stem from the report of the weather observer. Newspapers have not been checked.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	11	18	23	42		G	45.87	122.67				La Center	WA	V	RF
MWR - 2233							MWR - 2233		-	-		MWR - 2233				-

Event #486 - Summary, and parameter estimates with source IDs Full references for Event # 486
Catalog entries are apparently based on a report in MWR from the weather observer in Spokane, who stated that an event of RF Intensity III-IV shook buildings there. No newspapers have been researched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1915	12	10	20	45		G	47.67	117.42				Spokane	WA	IV	RF
MWR - 2234							MWR - 2234		-	-		MWR - 2234				-

Event #487 - Summary, and parameter estimates with source IDs Full references for Event # 487
Catalogs refer to the reports of weather observers in Seattle (RF IV), Silverton, Sumner (RF IV), and Olympia (RF IV). Olympia reported 3 shocks, Sumner 2, the others 1. Durations reported ranged from 1-5 sec. Buildings shook, windows rattled.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1916	1	2	0	52		G	47.33	122.33				Puget Sound	WA	V	MM	12000.00		mi2
RAS - 134							BRAD - 312		-	-		USEQS - 950				RAS - 134

Event #488 - Summary, and parameter estimates with source IDs Full references for Event # 488
All catalog entries refer back to the MWR. No newspapers have been researched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1916	1	4	18	40		G	44.63	124.13				Newport	OR	IV	RF
MWR - 2235							MWR - 2235		-	-		MWR - 2235				-

Event #489 - Summary, and parameter estimates with source IDs Full references for Event # 489
Underlying information for this event includes the observation of the Marietta weather observer of a shock lasting 60 seconds of RF intensity V. Bradford adds: "felt through southwest British Columbia and northwest Washington." Reid's notes cite the BSSA of 1916 (not yet in the database), and add: "Houses rocked and dishes rattled. One house said to have been damaged." No newspapers have been reserarched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1916	2	22	3	45	P	P	48.80	122.60				Marietta	WA	V	MM
TAWA - 1146							USEQS - 951		-	-		USEQS - 951				-

Event #490 - Summary, and parameter estimates with source IDs Full references for Event # 490
Known only from a Penticton Herald article transcribed in the WPPSS documents: "FAIRVIEW- A slight earthquake shock was felt here about half past five o'clock on Tuesday evening last. A report last night from Victoria stated that the location of the event which shook the whole province yesterday morning, was placed at near Mt. Baker."
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1916	2	22	5	30	P							Penticton	B.C.
N-WPP - 2396							-		-	-		N-WPP - 2396				-

Event #491 - Summary, and parameter estimates with source IDs Full references for Event # 491
The underlying information here is a report from the weather observer in Cedar Falls. No newspapers have been checked.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1916	3	2	23	15		G	47.40	120.82				Cedar Falls	WA	II	RF
MWR - 2241							MWR - 2241		-	-		MWR - 2241				-

Event #492 - Summary, and parameter estimates with source IDs Full references for Event # 492
East of WA and OR.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1916	4	20	4	30		G	44.00	114.80		4.30	IML
WWC - 1809							WWC - 1809		-	WWC - 1809		-				-

Event #493 - Summary, and parameter estimates with source IDs Full references for Event # 493
The original source of this information is the report of the Sumner weather observer. No newspapers have been checked.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1916	4	24	4	43		G	47.20	122.22				Sumner	WA	II	RF
MWR - 2242							MWR - 2242		-	-		MWR - 2242				-

Event #494 - Summary, and parameter estimates with source IDs Full references for Event # 494
East of WA and OR.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1916	5	6	6	36		G	43.80	116.00		4.30	IML
WWC - 1811							WWC - 1811		-	WWC - 1811		-				-

Event #495 - Summary, and parameter estimates with source IDs Full references for Event # 495
Earthquake in Idaho.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1916	5	12	6	30	P	P	43.70	116.20				Boise	OR	VII	RF
TAWA - 1149							WWC - 1812		-	-		BYERL - 390				-

Event #496 - Summary, and parameter estimates with source IDs Full references for Event # 496
East of WA and OR.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1916	5	26	6	36		G	43.80	116.00						V	MM
WWC - 1813							WWC - 1813		-	-		WWC - 1813				-

Event #497 - Summary, and parameter estimates with source IDs Full references for Event # 497
The monthly weather reveiw gives this information: "A slight earthquake which shook eastern Oregon, flooded part of the Baker County golf links with a spring which burst forth within a few hundred yards of a mineral spring. Although the water in the mineral spring is hot , the spring flows ice cold. (Internat. News. Ser.)." Berg and Baker assigned MM Intensity III to this. No newspapers have been checked.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1916	5	28					44.77	117.83				Baker	OR	III	MM
MWR - 2244							WWC - 1814		-	-		BB - 1354				-

Event #498 - Summary, and parameter estimates with source IDs Full references for Event # 498
Known only from Milne: "Nanaimo residents generally felt a tremor. Col."
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1916	6	19	5	50	A	L						Nanaimo	B.C.	III	MM
MILNE - 1443							-		-	-		MILNE - 1443				-

Event #499 - Summary, and parameter estimates with source IDs Full references for Event # 499
Known from Weather Bureau Report. "Twentyfive Mile Creek - There was a light earthquake on the 27th at 12:20 p.m. northwest to southeast."
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1916	8	27	12	20	P							Twentyfive Mile Creek	WA
LANGE - 7111							-		-	-		LANGE - 7111				-

Event #500 - Summary, and parameter estimates with source IDs Full references for Event # 500
Event is east of WA and OR.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1916	9	10	2	57		G	43.50	114.30						V	MM
WWC - 1815							WWC - 1815		-	-		WWC - 1815				-

Event #501 - Summary, and parameter estimates with source IDs Full references for Event # 501
This earthquake was felt in Skagit, Whatcom and Snohomish Counties, most strongly in Mt. Vernon and Concrete. There are no reports of it being felt in Seattle or in British Columbia. Catalogs reporting this event use Silverton as a location because a weather observer there reported it, but the newspaper reports suggest that it was more strongly felt to the north. Neither damage nor aftershocks were reported. In Mount Vernon, a newspaper (the name of the paper is not known) says: "(the) water superintendent was examining the ... pumping station, 16 feet below the surface of the ground when he felt a movement of the earth and swaying of the cellar floor, entirely uncommon to any former experience while down beneath the ground. Realizing it was a quake, he hurriedly ascended the steps. 'I never made better time climbing those steps", said the water superintendent. 'I did not wait to change gears, but went right up to the top on high.' 'It was nature's protest against the democratic administration,' said N. B. Hannay, as he hastened out of the bank to see if the quake had started his auto."
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1916	11	21	19	30		G	48.00	121.53				Silverton	WA	IV	MM
MWR - 2245							MWR - 2245		-	-		RAS - 138				-

Event #502 - Summary, and parameter estimates with source IDs Full references for Event # 502
">Other (non-earthquake) Other (non-earthquake)The S.F. Call reports a distant earthquake recorded at Seattle.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1916	11	23	3	20								distant EQ
N-UCB - 2001							-		-	-		N-UCB - 2001				-

Event #503 - Summary, and parameter estimates with source IDs Full references for Event # 503
Explosion The Oregonian reports one hundred pounds of blasting powder set off in Portland.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1917												explosion
N-Ore - 1995							-		-	-		N-Ore - 1995				-

Event #504 - Summary, and parameter estimates with source IDs Full references for Event # 504
The MWR weather observer at Ashford reports a shock of RF Intensity V. All later calalogs cite this source. No newspapers have been researched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1917	3	28	17	5		G	46.80	121.93				Ashford	WA	V	RF
MWR - 2246							MWR - 2246		-	-		MWR - 2246				-

Event #505 - Summary, and parameter estimates with source IDs Full references for Event # 505
Known only from the Woodward-Clyde catatlog . The location is out of the area .
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1917	4	20	4	30		G	44.00	114.80						V	MM
WWC - 1817							WWC - 1817		-	-		WWC - 1817				-

Event #506 - Summary, and parameter estimates with source IDs Full references for Event # 506
The information given for this earthquake derives from the reports of the Longmire (RF Intensity V, 1 sec. duration) and Glenoma (RF Intensity IV, 30 sec.) weather observers. Newspapers have not been researched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1917	6	9	6	30	A	P	46.80	122.00				Longmire	WA	V	RF
TAWA - 1152							RAS - 140		-	-		TAWA - 1152				-

Event #507 - Summary, and parameter estimates with source IDs Full references for Event # 507
Offshore.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1917	6	10	4	32			44.00	129.00				Offshore	OR
BB - 1355							BB - 1355		-	-		BB - 1355				-

Event #508 - Summary, and parameter estimates with source IDs Full references for Event # 508
Known from Weather Bureau Report. "Earthquakes - Glenoma"
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1917	6	11										Glenoma	WA
LANGE - 7111							-		-	-		LANGE - 7111				-

Event #509 - Summary, and parameter estimates with source IDs Full references for Event # 509
Listed in Woodward-Clyde and Milne only. Far to the north and west.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1917	7	1					50.00	128.00		6.40	IML
MILNE - 1444							MILNE - 1444		-	WWC - 1819		-				-

Event #510 - Summary, and parameter estimates with source IDs Full references for Event # 510
Known from Weather Bureau Report. "Earthquakes - Cedar Lake"
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1917	7	24										Cedar Lake	WA
LANGE - 7111							-		-	-		LANGE - 7111				-

Event #511 - Summary, and parameter estimates with source IDs Full references for Event # 511
Townley and Allen summarize the weather observer's reports: "Longmire , ...Rock slides; three shocks; duration six seconds. At Summitt Inn....two shocks; duration forty seconds. At Cedar Lake...,IV; duration four seconds." They also cite 'Seismological Despatches of the Georgetown University'. Newspapers have not yet been checked.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1917	11	12	2	47	A	P	46.80	121.80				Mt.Rainier	WA	VI	MM	1000.00		mi2
TAWA - 1153							USEQS - 952		-	-		USEQS - 952				RAS - 141

Event #512 - Summary, and parameter estimates with source IDs Full references for Event # 512
There is one report from the Longmire weather observer which all catalog entries stem from. Townley and Allen also cite 'Seismological Despatches of the Georgetown University'. No newspapers have been checked.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1917	11	13	6	57	P	P	46.80	121.80				Longmire	WA	V	RF
TAWA - 1154							RAS - 142		-	-		TAWA - 1154				-

Event #513 - Summary, and parameter estimates with source IDs Full references for Event # 513
Listed in Woodward-Clyde and Milne only. Far to the north and west.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1917	12	23					50.00	128.00		6.50	IML
MILNE - 1445							MILNE - 1445		-	WWC - 1822		-				-

Event #514 - Summary, and parameter estimates with source IDs Full references for Event # 514
Listed in Woodward-Clyde and Milne only. Far to the north.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1918	2	4	12	35		L	51.00	118.00		6.00	IML	Revelstoke	B.C.
MILNE - 1446							MILNE - 1446		-	WWC - 1823		MILNE - 1446				-

Event #515 - Summary, and parameter estimates with source IDs Full references for Event # 515
Berg and Baker were the first to catalog this event. They reference the Oregonian of 2/13 (p.4, c. 5), which should be checked.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1918	2	12	6	0	P	P	45.53	122.62				Portland	OR	III	MM
BB - 1356							WWC - 1824		-	-		BB - 1356				-

Event #516 - Summary, and parameter estimates with source IDs Full references for Event # 516
Listed only in Milne: "Very slight at Victoria. Col." No newspapers have been researched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1918	2	13	5		A	L						Victoria	B.C.
MILNE - 1447							-		-	-		MILNE - 1447				-

Event #517 - Summary, and parameter estimates with source IDs Full references for Event # 517
Listed only in Woodward-Clyde.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1918	2	21					46.86	121.33						IV	MM
WWC - 1825							WWC - 1825		-	-		WWC - 1825				-

Event #518 - Summary, and parameter estimates with source IDs Full references for Event # 518
Catalogs cite the BSSA: "... Houses swayed, windows, doors and dished rattled, but no damage was done." No newspapers have been checked.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1918	2	28	3	45	P	P	46.50	120.50				Yakima	WA	V	MM
TAWA - 1155							USEQS - 953		-	-		USEQS - 953				-

Event #519 - Summary, and parameter estimates with source IDs Full references for Event # 519
The underlying source is the Walla Walla weather observer. Townley and Allen's is the only catalog to include this, and they say: "Two shocks; abrupt bumping, north to south. Possibly the same shock as was felt in Yakima Valley on February 28, one of the dates being in error"
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1918	3	1	4	8	P	P	46.03	188.33				Walla Walla	WA	III	RF
TAWA - 1156							REID1 - 779		-	-		TAWA - 1156				-

Event #520 - Summary, and parameter estimates with source IDs Full references for Event # 520
Townley and Allen state: "This was an Idaho earthquake felt in Spokane..." The BSSA gives this information: "Spokane, Washington, March 11, 1918.- At Gonzaga University, Spokane, Washington, an earthquake was recorded at 8:26 p.m. on March 11th by the university seismograph. It had an intensity of IV of the R.-F. scale, and lasted about two seconds. It was distinctly felt also at several stations along the Northern Pacific Railway, where walls swayed and doors and windows rattled. It was felt also at Trout Creek and Heron, Montana, and at Cabinet, Clarks Fork, Sant [sic] Point, and Rathdrum, Idaho. - A.M. Jung, Seis. Observer" No newspapers have been researched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1918	3	11	8	26	P	P	47.60	117.00				N.E.	WA	V		16000.00		mi2
TAWA - 1157							WWC - 1827		-	-		REID1 - 780				REID1 - 780

Event #521 - Summary, and parameter estimates with source IDs Full references for Event # 521
The BSSA reports: "An earthquake was felt at White Bluff, about seven miles west of Spokane, Wash., shortly after 1 o'clock p.m. on April 18th and lasted about four seconds. It rattled dishes and windows and was accompanied by a rumbling noise. A.M. Jung, curator of the seismograph at Gonzaga University at Spokane reports that the time at his station was 1:13 p.m." There is also a report from the White Bluff Prarie weather observer of RF Intensity IV, lasting 4 seconds. No newspapers have been checked.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1918	4	18	1	13	P	P	47.60	117.40				White Bluffs Prairie	WA	IV	RF
TAWA - 1158							WWC - 1828		-	-		TAWA - 1158				-

Event #522 - Summary, and parameter estimates with source IDs Full references for Event # 522
Catalog entries come from the report from the weather observer at the North Fork Sauk River. No newspapers have been checked.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1918	5	7	1	15	P	P	48.40	121.55				North Fork, Sauk River	WA	IV	RF
TAWA - 1159							WWC - 1829		-	-		TAWA - 1159				-

Event #523 - Summary, and parameter estimates with source IDs Full references for Event # 523
Listed only in Woodward Clyde and in WPPSS documentation. Woodward-Clyde cite the a Weston Geophysical listing in a 1976 WPPSS document. The WPPSS reference included here (1981) cites Townley and Allen, who list no earthquake at this date. Townley and Allen do have an earthquake in 1918 on 5/7 at 21:15; but they list it as felt in Snohomish County.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1918	6	7	23	15		G	47.59	122.33				W. Seattle	WA
WWC - 1830							WWC - 1830		-	-		WPPSS - 2455				-

Event #524 - Summary, and parameter estimates with source IDs Full references for Event # 524
Catalog entries are based on a single weather observer's report from Longmire. No newspapers have been referenced.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1918	6	20	9	47	P	P	46.50	121.70				Longmire	WA	V	RF
TAWA - 1160							RAS - 147		-	-		TAWA - 1160				-

Event #525 - Summary, and parameter estimates with source IDs Full references for Event # 525
The earthquake is mentioned in the Monthly Weather Review as having been felt at Victoria, and recorded on the Weichert vertical seismograph there. The Daily Colonist, from Victoria, reports that that the event was felt by campers at Cordova Bay and in some parts of Victoria.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1918	8	22	8	21	A	L						Victoria	B.C.
MILNE - 1448							-		-	-		MILNE - 1448				-

Event #526 - Summary, and parameter estimates with source IDs Full references for Event # 526
The BSSA is the source for catalog entries. It gives this information: "... from C.H. Aldrich of Corfu ... 'The first shock was on November 1st, between 9:15 and 9:30 a.m. This was the most severe and lasted several seconds; it shook goods from the shelves and caused landslides for several miles along the hills. We have had on an average about three shocks every twenty-four hours since, but lighter.'..." The WPPSS documents add: "The November 1, 1918 Corfu earthquake had an epicentral intensity of (MM) V-VI, based on intensity reports from the town of Corfu, Washington, and on reported landslides in the vicinity of Corfu. Based on the seismograph record at the Gonzaga University station (SPO) in Spokane, Washington, it is estimated that this earthquake had a magnitude (MS) of approximately 4.4." A search for additional newspaper accounts from eastern Washington newspapers was fruitless. The local earthquake was overwhelmed by the influenza epidemic, the end of World War I, and the impending famine in Russia.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1918	11	1	9	20	A	P	46.70	119.50		4.40	Inst	Corfu	WA	VI	RF
TAWA - 1161							USEQS - 954		-	WPPSS - 2355		TAWA - 1161				-

Event #527 - Summary, and parameter estimates with source IDs Full references for Event # 527
This large and significant earthquake is well known and well represented, both in catalogs and newspapers. The intensity given is for Vancouver, some distance from the epicenter. Higher intensities undoubtedly were felt nearer the epicenter. Earthquake History of the United States summarizes: "Felt in southern British Columbia and northwestern Washington. Buildings shook at Seattle. Magnitude 7.0." The location cited is from the dissertation of Garry Rogers (1983). He says: "Investigations with the set of P arrival times listed in the ISS place the epicentre on Vancouver Island near the west coast, south of the present town of Gold River which did not exist in 1918. Because of the quality of 1918 arrival times this epicentre has an uncertainty of the order of + 50 km. Felt information collected by Dennison (1919) and supplemented by newspaper investigations suggest the magnitude of 7 (Ms) calculated by Gutenberg and Richter (1949) is correct." Earthquake History of the United States says: "Felt in southern British Columbia and northwestern Washington. Buildings shook at Seattle. Magnitude 7.0."
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1918	12	6	12	45	A	L	49.50	125.90		7.00	G	Vancouver	B.C.	V	MM	650000.00		km2
N-Ore - 1193							GCR - 2330		-	MILNE - 1449		USEQS - 955				GCR - 2330

Event #528 - Summary, and parameter estimates with source IDs Full references for Event # 528
Only Milne gives this information: "1918 DECEMBER 7. About ten aftershocks of the December 6 tremor were felt at Alberni and Estevan."
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1918	12	7										Alberni	B.C.
MILNE - 1450							-		-	-		MILNE - 1450				-

Event #529 - Summary, and parameter estimates with source IDs Full references for Event # 529
Only Milne gives this information: "1918 DECEMBER 16. 5:09 a.m. A strong aftershock of the December 6 tremor was felt at Alberni."
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1918	12	16	5	9	A	L						Alberni	B.C.
MILNE - 1451							-		-	-		MILNE - 1451				-

Event #530 - Summary, and parameter estimates with source IDs Full references for Event # 530
Far to the north and west. Listed only in Milne, this is an instrumental location from the ISS. No mention is made of this event having been felt.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1919	5	18					56.00	136.00
MILNE - 1452							MILNE - 1452		-	-		-				-

Event #531 - Summary, and parameter estimates with source IDs Full references for Event # 531
Mentioned in the BSSA. The Monthly Weather Review says: "What seemingly was an earth disturbance gave buildings in Seattle a slight shaking up to-night. The disturbance was felt as far as 45 miles from here." It cites Associated Press as the source. No newspapers have been researched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1919	6	5	10	33	P	P	47.59	122.33				Seattle	WA
TAWA - 1163							WWC - 1834		-	-		TAWA - 1163				-

Event #532 - Summary, and parameter estimates with source IDs Full references for Event # 532
Listed only by Milne and Woodward-Clyde, this is an instrumental location from the ISS, with no mention of the event having been felt.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1919	7	1	21	49		G	50.00	128.00		5.50	IML
WWC - 1835							MILNE - 1453		-	WWC - 1835		-				-

Event #533 - Summary, and parameter estimates with source IDs Full references for Event # 533
Listed only by Milne and Woodward-Clyde, this is an instrumental location from the ISS, with no mention of the event having been felt.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1919	7	10	2	22		G	50.00	128.00		5.00	IML
WWC - 1836							MILNE - 1454		-	WWC - 1836		-				-

Event #534 - Summary, and parameter estimates with source IDs Full references for Event # 534
Listed only by Milne and Woodward-Clyde, this is an instrumental location from the ISS, and Milne says: "This may be in error for no tremor was felt."
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1919	10	10					49.00	124.00		5.50	IML			0
MILNE - 1455							MILNE - 1455		-	WWC - 1837		MILNE - 1455				-

Event #535 - Summary, and parameter estimates with source IDs Full references for Event # 535
All cataloged information on this event comes from the report of a single weather observer who said: "Men awakened; shocks throughout night" . No newspapers have been researched.
TIME							LOCATION			MAGNITUDE		MAX. INTENSITY					FELT AREA
YR	MO	DAY	HR	MIN	AM/PM	Time Type	LAT(N)	LON(W)	DEP (km)	MAG	Mag Type	Felt Plc.	Felt St.	Inten- sity	Int. Type	Felt Area	Felt Area Int.	Felt Area Units
1919	12	25	10	0	P	P	45.50	122.20				Bullrun	OR	IV	RF
TA-OR - 537							REID1 - 628		-	-		TA-OR - 537				-